ISSN:
1436-5073
Schlagwort(e):
reversed-phase HPLC
;
transition metals
;
noble metals
;
4-(5-nitro-2-pyridylazo) resorcinol
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Chemie und Pharmazie
Notizen:
Abstract This paper reports the separation and determination of Nb(V), V(V), Co(II), Fe(III), Ni(II), Ru(III) and Pd(II) by reversed-phase HPLC using the new reagent, 4-(5-nitro-2-pyridylazo) resorcinol (5-NO2-PAR) as a precolumn derivatization reagent. On a C18 column, the seven metal chelates can be separated quantitatively with methanol/water (52∶48, v/v) containing 15 mmol/l pH 5.0 acetate buffer and 10 mmol/l tetrabutylammonium bromide (TBA·Br). The detection limits for Nb(V), V(V), Co(II), Fe(III), Ni(II), Ru(III) and Pd(II) are 0.65 ppb, 0.94 ppb, 0.10 ppb, 0.15 ppb, 0.18 ppb, 3.02 ppb and 2.35 ppb, respectively when the ratio of signal to noise (S/N) is 3. This method is simple and rapid, and has been used in the analysis of rain and liquor with satisfactory results.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF01243017
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